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GSC 4560--02157: a New Long-period Eclipsing Cataclysmic Variable Star

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arxiv 1411.3847 v1 pith:3D6STOQ2 submitted 2014-11-14 astro-ph.SR

A.V. Khruslov , A.V. Kusakin , E.A. Barsukova , V.P. Goranskij , A.F. Valeev , N.N. Samus This is my paper
classification astro-ph.SR
keywords starbrightnessspectrumvariablecataclysmiccycleeclipsingjune
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We study the newly discovered variable star GSC 4560--02157. CCD photometry was performed in 2013--2014, and a spectrum was obtained with the 6-m telescope in June, 2014. GSC 4560--02157 is demonstrated to be a short-period (P=0.265359d) eclipsing variable star. All its flat-bottom primary minima are approximately at the same brightness level, while the star's out-of-eclipse brightness and brightness at secondary minimum varies considerably (by up to 0.6m) from cycle to cycle. Besides, there are short-term (time scale of 0.03-0.04 days) small-amplitude brightness variations out of eclipse. This behavior suggests cataclysmic nature of the star, confirmed with a spectrum taken on June 5, 2014. The spectrum shows numerous emissions of the hydrogen Balmer series, HeI, HeII.

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